JP2004522117A - Stabilizer with telescopic rod for tripods etc. - Google Patents

Abstract

【Task】
A stabilizer (10) for a tripod (1) or the like is arranged to be connected at one end to a corresponding leg (2), and is connected and collected at the other end to form a shaft. A plurality of rods (11) for each leg of a tripod, each having at least two rod members (12, 13) slidable relative to one another in a direction, and a pre-adjusted adjustment (14) for reversibly locking the two rod members together. The restraining means releasably blocks the relative axial sliding of the rod members in one direction, and between the rod members to allow free axial sliding of the rod members in the opposite direction. It is a unidirectional type that moves in only one direction.

Description

【Technical field】
[0001]
The invention relates to a stabilizer with a telescopic rod for a tripod or the like, of the type having the features described in the preamble of the main claim.
[Background Art]
[0002]
The term tripod used in this context is intended to mean a support structure having at least three legs interconnected by a stabilizer, in particular for optical, photographic and cinematographic devices. Structures of the type described above are known by current products by the same applicant.
[0003]
In known tripods, the stabilizer is adapted to have a nested rod connected at one end to each leg and connected together at the opposite end.
[0004]
Such rods each have two rod members slidable relative to each other and restraining means for reversibly blocking the relative movement of the rod members with respect to each other.
[0005]
Usually, the restraining means used are of the type having a sleeve that can be clamped or locked by a handle or lever. In either case, there is direct intervention by the operator in the locking means for locking the rod members in the desired position and releasing them when it is desired to close and move them after use. Done.
DISCLOSURE OF THE INVENTION
[Problems to be solved by the invention]
[0006]
This second operation is undesirable, especially since it is often necessary to close and move and quickly move it to a new position, for example to capture a video of a particular accidental situation. .
[0007]
Thus, the need to release all three legs of the stabilizer, for example to close a tripod having three legs, is an obvious obstacle.
[0008]
The technical problem facing the present invention is that of substantially simplifying and facilitating the task of closing the tripod. Within the scope of the present invention, the main object of the present invention is to improve the release and adjustment work of the stabilizer.
[0009]
It is a further object of the invention to be able to perform both one-handed work and fairly quiet work to the extent possible.
[Means for Solving the Problems]
[0010]
This problem, as well as other objects, is met and solved by a stabilizer made in accordance with the following claims of the invention.
[0011]
The features and advantages of the present invention will become apparent from the detailed description of one preferred embodiment thereof, given by way of non-limiting example, with reference to the accompanying drawings.
BEST MODE FOR CARRYING OUT THE INVENTION
[0012]
In the best mode for carrying out the invention shown in the drawings, reference numeral 1 denotes the entire tripod with the legs indicated by reference numeral 2 which are telescopically extendable. The tripod itself has a conventional structure. The leg 2 of the tripod 1 has, according to the example described, three sliding parts 2a, 2b, 2c, all of which gather at their first ends. It is of the type that supports a spider 4 and supports each foot 5 at the opposite end.
[0013]
The three legs 2 are interconnected by a stabilizer, generally designated 10. The stabilizer 10 has three rods 11, which are connected at one end to the corresponding leg 2 and at the opposite end to a common connection member 11a.
[0014]
Each rod has at least two rod members 12, 13 slidable telescopically in the axial direction X. The member 12 is preferably formed in a tubular shape and houses a member 13 guided therein.
[0015]
The rod members 12, 13 are provided with restraining means, generally designated 14, for reversibly locking the rod members 12, 13 to one another in various preset adjustment positions. This will be described below.
[0016]
The rod member 13 has a first hinge member 15 screwed at the end facing the corresponding leg 2. The rod member is rotatable by the first hinge member 15 with respect to a second hinge member 16 belonging to the second sliding portion 2b of the leg 2. The rod member 13 also has a stem 17 that supports a guide plug 18 with a screw 19 at the opposite end. The rod 17 is guided in the tubular part of the rod 12 by the stem 17.
[0017]
A plurality of annular notches 20 are formed along the stem 17. The notch has a shoulder 21 facing the first hinge member 15, a short cylindrical portion 22, and a frusto-conical slope 23 that tapers away from the corresponding shoulder 21.
[0018]
In the proposed example, five cutouts are formed, but the number of cutouts may vary as needed.
[0019]
The notch 20 constitutes a part of the restraining means belonging to the rod member 13 for reversibly locking the rod members to each other.
[0020]
Such restraining means are coupled to the rod member 12 and cooperate with corresponding means having a sleeve-like body 24. One end 24 a of the sleeve-like body is engaged within the tubular portion of the rod member 12. An axial cavity 25 is formed in the sleeve-shaped body 24 so that the stem 17 of the first rod member 13 is guided in the cavity. The sleeve-shaped body includes a cavity 26 having an axis Y inclined with respect to the axis X in a direction substantially orthogonal to the truncated conical surface of the inclined surface 23.
[0021]
In the cavity 26, a sliding block 27 which can move in the direction of the axis Y with respect to a spring 28 is slidably guided. The sliding block 27 is associated with a through hole 29 traversed by the stem 17 of the rod member 13.
[0022]
The slide block 27 is provided with a projection 30 acting in a bore 29, on which an annular abutment extending in an arc of less than 180 ° on the side corresponding to the spring 28. A surface 31 and a guide surface 32 substantially perpendicular to the contact surface 31 and facing the stem 17 are defined. The abutment surface 31 is provided in such a way that the bifurcation of the leg 2 between the rod members 12, 13 locks the relative sliding along the axis X of the telescopic extension of the corresponding rod in one direction only. The notch 20 is adapted to engage with the shoulder 21 of the notch 20. Also, the guide surface 32 engages with the corresponding notch ramp 23 to slide the slide block 27 in its own seat against the spring 28, followed by two rods. It is determined that one of the members can be freely retracted so that one enters the other.
[0023]
The sliding block 27 is also provided with a push-button control 33 for moving out of the notch 20 so as to be disengaged. It is preferable that a slide block is integrally provided in such a push-button control unit.
[0024]
To assemble the tripod 1, with the rod retracted, the legs 2 are spread out as far as is allowed by the stabilizer. Subsequently, a single adjustment of each rod is effected, depending on the different support conditions depending on the surrounding ground.
[0025]
To do this, the push button 33 is pushed by hand and the sliding block 27 is disengaged from the corresponding annular notch, so that the free sliding of the rod members 12, 13 with respect to each other. Enabled.
[0026]
Releasing the sliding block 27 allows for the necessary adjustment of the relative position of the two rod members until the sliding block fits into and engages with the corresponding notch 20, Are assembled in an efficient and stable manner.
[0027]
If it is desired to reposition, it is sufficient to close the legs 2 together. The sliding block 27 guided by the frusto-conical slope of the notch 20 is disengaged from the rod member 13 and subsequently slides freely into the retracted position in the rod member 12.
[0028]
Thus, the present invention fulfills the proposed purpose by gaining many advantages over the current state of the art. These advantages include a notable simplification of the operation of assembling the tripod, especially in the phase of closing the tripod, the quietness of the operation in the adjustment phase, the advanced operation possible even with one hand.
[Brief description of the drawings]
[0029]
FIG. 1 is an overall perspective view of a tripod provided with a stabilizer formed according to the present invention.
FIG. 2 is a plan view of a stabilizer used in the tripod of FIG. 1;
FIG. 3 is an enlarged sectional view of a detail of FIG. 2;

Claims (10)

At least two rod members (12) arranged to be connected at one end to the corresponding leg (2), commonly connected and collected at the other end, and slidable axially with respect to each other. , 13) each having a plurality of rods (11) for each leg (2) of a tripod and restraining means for reversibly locking said two rod members to one another according to a pre-set adjustment. (14) a stabilizer (10) for a tripod (1) or the like, wherein the restraining means blocks releasable relative axial sliding of the one-way rod member, Stabilizers of the unidirectional type, which move in only one direction between the rod members (12, 13) in order to allow free axial sliding of the rod members in opposite directions. . The restraining means (14) includes a plurality of notches (20) defining a shoulder (21) on one end and an inclined surface (23) on the opposite side in the axial direction in each rod. (12, 13), which is slid and guided in a direction inclined in the axial direction, guided and engaged with the notch (20). The other of the two rod members (12, 13) has a sliding block (27) that is urged to be in a state, and the sliding block (27) has the shoulder () in one direction. 21) a direction opposite to the one direction for disengaging the slide block (27) from the corresponding notch (20) with the contact surface (31) abutting one of the predetermined ones. 2. The stabilizer according to claim 1, further comprising a guide surface slidable on the inclined surface. (10). The stabilizer (10) according to claim 1 or 2, wherein the one direction is a direction in which the rod members (12, 13) are pulled out in a telescopic manner. The stabilizer (10) according to claim 2 or 3, wherein the sliding block (27) is elastically biased toward the notch (20) when engaged. The stabilizer (10) according to any one of claims 2 to 4, wherein the inclined direction is substantially orthogonal to a surface of the inclined surface (23). The stabilizer (10) according to any one of claims 2 to 5, wherein the inclined surface (23) has a truncated conical surface. The stabilizer according to any one of claims 2 to 6, wherein the shoulder (21) extends radially with respect to the rod member (12, 13). The slide block (27) is connected to a push-button control (33) for moving it so that it is disengaged from the notch (20). Stabilizer (10). The stabilizer (10) according to claim 8, wherein the push-button control (33) is integral with the sliding block (27). A tripod (1) comprising at least three legs interconnected by a stabilizer (10) according to any one of the preceding claims.

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